Corrected a problem in GetTimeZoneInformation() due a change to

mktime() in glibc-2.1.1 when daylight saving time is in effect.

Corrected a problem in GetTimeZoneInformation() due a change to
874b8a3e · Rein Klazes · Alexandre Julliard · e22a4e57 · 874b8a3e
Commit 874b8a3e authored Jun 12, 1999 by Rein Klazes Committed by Alexandre Julliard Jun 12, 1999
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time.c win32/time.c +9 -1

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--- a/win32/time.c
+++ b/win32/time.c
@@ -103,11 +103,19 @@ BOOL WINAPI SetSystemTime(const SYSTEMTIME *systime)
 DWORD WINAPI GetTimeZoneInformation(LPTIME_ZONE_INFORMATION tzinfo)
 {
    time_t gmt, lt;
+    struct tm *ptm;
+    int daylight;

    memset(tzinfo, 0, sizeof(TIME_ZONE_INFORMATION));

    gmt = time(NULL);
-    lt = mktime(gmtime(&gmt));
+    ptm=localtime(&gmt);
+    daylight=ptm->tm_isdst;
+
+    ptm = gmtime(&gmt);
+    ptm->tm_isdst=daylight;
+    lt = mktime(ptm);
+    
    tzinfo->Bias = (lt - gmt) / 60;
    tzinfo->StandardBias = 0;
    tzinfo->DaylightBias = -60;